Spence, R.D., R.D. Powell, P.J.H. Sharpe and C.A. Rogers (1982). The effect of CO2 on stomatal aperture of Vicia faba in light and dark. Presentation, Southern Section of the American Society of Plant Physiologists. The University of Texas Marine Research Station, Port Aransas, Texas, March 8-9, 1982.

Spence, R.D., R.D. Powell and P.J.H. Sharpe (1983). Response of guard cells to CO2 at different temperatures in Vicia faba. Presentation, Southern Section of the American Society of Plant Physiologists. The University of Tennessee, Knoxville, Tennessee, March 14-15, 1983.

Workshop on an Integrated Approach to the Study of Environmental Stress on Plant Growth, Asilomar, California, February 10-12, 1988.

Controlled Environmental Life Support Systems Research Conference. Texas A&M University, College Station, Texas, February 22-23, 1988.

Workshop on Markers of Air Pollution Effects in Forests. U.S. Environmental Protection Agency, Office of Research and Development, Wildacres, Little Switzerland, North Carolina, April 25-27, 1988.

Thirty-ninth Annual Meeting of AIBS/Annual Meeting of the Ecological Society of America/Annual Meeting of the International Society of Ecological Modelling, North America Chapter. University of California at Davis, California, August 14-18, 1988.

Life Support Systems Research Conference, Texas A&M University, College Station, Texas, February 14-15, 1989.

EXTERNAL PROFESSIONAL GRANTS: Faculty Director at U.T.-Permian Basin, Joint Admissions Medical Program (JAMP), administered through the Texas Medical and Dental Schools Applications Service. FY '02: $35,000 FY '03: $27,000 FY '04: $15,000 FY '05: $15,500 FY '06: $15,000 FY '07: $15,000 FY '08: $15,000 FY '09: $15,000 (funding may oscillate from year to year depending on the largesse of the legislature, but has stabilized in the last several years at $15,000)

Ray, Susan M., M.S., Life Science, U. T.-Permian Basin, 1995. Thesis title: Development of an enzyme immunoassay using a monoclonal antibody specific for luteinizing hormone in a variety of mammalian species. Member of Advisory Committee.

Listiak, Tamara L., M.S., Biology, U.T.-Permian Basin, 1996. Thesis title: The role of bacteria in the remediation of weathered petroleum hydrocarbons in a soil from Midland County, Texas. Member of Advisory Committee.

Matthews, Ethel M., M.S., Biology, U.T.-Permian Basin, 1997. Thesis title: A study of fungi in the bioremediation of weathered crude oil from a soil in Midland County, Texas. Member of Advisory Committee.

Melvin, W. David, M.S., Biology, U.T.-Permian Basin, 1997. Thesis title: Development of methods for analysis of bioremediation effectiveness in the semi-arid environment of West Texas. Member of Advisory Committee.

Mouton, Steven L., M.S., Biology, U.T.-Permian Basin, 1997. Thesis title: A comparison of heme iron utilization genes from Vibrio cholerae with those of other pathogenic Vibrio species and cloning of a HutA-like gene from Vibrio parahaemolyticus. Member of Advisory Committee.